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7.62x51 / 308 through mostly 16 but some 18 and 20. AR10s but want to suppress my FALs and M1A in the future.
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I have a Vox-S and Omega-300. On 11.5” 5.56 with .30 cal flat front caps they are very close. On 16” - 18” .308 bolt guns or gas tuned ARs the Omega is quieter, deeper tone and the optional brake front cap does reduce some recoil. So of those two the Omega suppresses better but the titanium sleeve can loosen up (mine never has).
For a little more weight the Liberty Anthem-S tests nicely at Pew Science.
Any of those hosts will need adjustable gas unless you go with Hux flow-through suppressor.
FALs and M1A might have sub-optimal barrel thread/shoulder issues to where a tightly bored can like the Omega-300 is sensitive to less than perfect alignment. The front cap on the Omega is larger bore than the baffles so it’s not always an obvious issue.
That’s a good candidate list. Choice could be driven by weight, cost, muzzle device or mount. I like Plan A because the longer mounts (XL & new lighter long mount) accommodates various muzzle device lengths. Direct thread is always an option but works best with common muzzle threads.